Our Products Produced with Overglaze Gold/Platinum Gilded Technique, Our gold and platinum patterned products, produced with the world's most advanced overglaze technologies, are decorated on a glassy surface to give them their shine. Porland's globally proven factory and advanced R&D ensure that these products, which are actually delicate and have poor machine resistance, can even be machine washed under the right conditions. For even longer life, you can hand wash. All Porland products made of 100% real gold and platinum are therefore not suitable for use in microwave ovens. Dishwasher Recommendations; - Before placing your porcelain products in the dishwasher, they must be cleaned of food residues as food particles may damage gilded products due to the centrifugal effect of the machine. - When placing your porcelain products in the dishwasher, unloading them or stacking them during use, care should be taken to ensure that they do not rub against each other. - Use the detergents and machine programs recommended by the dishwasher and detergent manufacturers for porcelain and take the relevant warnings into consideration. . - Porland recommends using liquid detergent. - Wash using the economy cycle (50 oC) program of the dishwasher.thank you... - Allow to cool at room temperature before removing from the dishwasher.